Operating below instrument approach minimums legally and safely requires strict adherence to §91.175(c), which mandates specific flight visibility, distinct identification of the runway environment, and the ability to execute normal landing maneuvers.
Pilots must pre-plan how to accurately determine flight visibility (e.g., using known lengths of approach lights or GPS distance to threshold) and precisely identify components of the "runway environment" to continue descent, noting that approach lights alone permit descent only to 100 feet above the touchdown zone.
Circling approaches are complex, demanding constant visual contact within a limited, altitude-dependent protected airspace, adherence to normal maneuvers, and careful consideration of circling direction as dictated by ATC, VFR patterns, or specific chart notes, making extensive pre-flight planning essential.
Operations below minimums on an instrument approach can be quite simple if the ceilings and visibilities are significantly above minimums. But when the chips are down along with the ceilings and visibilities, things aren’t quite so simple. Let’s take a deep dive into what it takes to get an airplane on the ground after a successful instrument approach.
Da Rules
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